exit on interrupt

lib/Sources/InteractiveSource.ts

@@ -12,6 +12,13 @@ import { OptionProcess, Option } from '../Option';
 import { OptionSource } from './OptionSource';
 
 export class InteractiveSource extends OptionSource {
+  private _exit_on_interrupt: boolean;
+
+  public constructor (exit_on_interrupt: boolean) {
+    super ();
+    this._exit_on_interrupt = exit_on_interrupt;
+  }
+
   private get_message (opt: Option): string {
     return typeof opt.message === 'undefined'
       ? `input ${opt.name}`
@@ -72,7 +79,12 @@ export class InteractiveSource extends OptionSource {
     for (const opt of options) {
       while (!opt.filled) {
         // eslint-disable-next-line no-await-in-loop
-        await this.prompt (opt);
+        await this.prompt (opt)
+          .catch ((e) => {
+            if (this._exit_on_interrupt)
+              process.exit (0);
+            throw e;
+          });
         if (!opt.filled)
           console.log ('input was invalid');
       }